On Counting Independent Sets in Sparse Graphs

  • Authors:
  • Martin Dyer;Alan Frieze;Mark Jerrum

  • Affiliations:
  • -;-;-

  • Venue:
  • SIAM Journal on Computing
  • Year:
  • 2002

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Abstract

We prove two results concerning approximate counting of independent sets in graphs with constant maximum degree $\Delta$. The first implies that the Markov chain Monte Carlo technique is likely to fail if $\Delta \geq 6$. The second shows that no fully polynomial randomized approximation scheme can exist for $\Delta \geq 25$, unless $\mathrm{RP}=\mathrm{NP}$.